libgee r40 - in trunk: . gee

[juergbi svn gnome org]

Author: juergbi
Date: Tue Jan 27 19:22:12 2009
New Revision: 40
URL: http://svn.gnome.org/viewvc/libgee?rev=40&view=rev

Log:
2009-01-27  JÃrg Billeter  <j bitron ch>

	* gee/arraylist.vala:
	* gee/list.vala:
	* gee/readonlylist.vala:

	Add List.slice method, patch by Zeeshan Ali Khattak,
	fixes bug 569188


Modified:
   trunk/ChangeLog
   trunk/gee/arraylist.vala
   trunk/gee/list.vala
   trunk/gee/readonlylist.vala

Modified: trunk/gee/arraylist.vala
==============================================================================
--- trunk/gee/arraylist.vala	(original)
+++ trunk/gee/arraylist.vala	Tue Jan 27 19:22:12 2009
@@ -128,6 +128,19 @@
 		_stamp++;
 	}
 
+	public List<G>? slice (int start, int stop) {
+		return_val_if_fail (start <= stop, null);
+		return_val_if_fail (start >= 0, null);
+		return_val_if_fail (stop <= this.size, null);
+
+		var slice = new ArrayList<G> (this._equal_func);
+		for (int i = start; i < stop; i++) {
+			slice.add (this[i]);
+		}
+
+		return slice;
+	}
+
 	private void shift (int start, int delta) {
 		assert (start >= 0 && start <= _size && start >= -delta);
 

Modified: trunk/gee/list.vala
==============================================================================
--- trunk/gee/list.vala	(original)
+++ trunk/gee/list.vala	Tue Jan 27 19:22:12 2009
@@ -63,5 +63,15 @@
 	 * @param index zero-based index of the item to be removed
 	 */
 	public abstract void remove_at (int index);
+
+	/**
+	 * Returns a slice of this list.
+	 *
+	 * @param start zero-based index of the begin of the slice
+	 * @param stop  zero-based index after the end of the slice
+	 *
+	 * @return A list containing a slice of this list
+	 */
+	public abstract List<G>? slice (int start, int stop);
 }
 

Modified: trunk/gee/readonlylist.vala
==============================================================================
--- trunk/gee/readonlylist.vala	(original)
+++ trunk/gee/readonlylist.vala	Tue Jan 27 19:22:12 2009
@@ -100,6 +100,10 @@
 		assert_not_reached ();
 	}
 
+	public List<G>? slice (int start, int stop) {
+		assert_not_reached ();
+	}
+
 	class Iterator<G> : Object, Gee.Iterator<G> {
 		public bool next () {
 			return false;